Growing Chia in Taita Taveta

Soil suitability analysis based on Taita Taveta's nutrient profile

Taita Taveta County is a challenging environment for Chia (soil-match score 44/100) and will need significant amendment before planting. Local soils average pH 6.64 — neutral and inside the 6–8 band Chia prefers, so no lime is usually required. Nitrogen (0.97 g/kg), phosphorus (12.9 mg/kg) and potassium (104 mg/kg) all meet Chia's requirements, so a maintenance fertilizer programme is enough. The county's predominantly loam soils suit Chia, which favours sandy loam. Chia's full potential is about 400 kg/acre (~KES 60,000/acre at KES 150/kg), but at Taita Taveta's 44/100 suitability a realistic target here is closer to 220 kg/acre (~KES 33,000/acre) unless the constraints above are addressed.

44Suitability score

Soil & climate match

FactorTaita Taveta soilChia needsStatus
pH6.6468OK
Nitrogen0.97 g/kgmin 0.5 g/kgOK
Phosphorus12.9 mg/kgmin 12 mg/kgOK
Potassium104 mg/kgmin 100 mg/kgOK
Rainfall500 mm300–800 mmOK
Altitude700 m1,000–2,200 mLow

Planting calendar

Long Rains

Month 1
Land Prep & Sowing
Month 2
Thinning & Top Dressing
Month 3
Flowering & Harvest

Short Rains

Month 1
Land Prep & Sowing
Month 2
Thinning & Top Dressing
Month 3
Flowering & Harvest

Top dressing guide

Product
CAN
Timing
Week 4
Instruction
Light feeder — a small top-dress at branching. Excess nitrogen causes lodging.
Bags per Acre
0.2

Economics

Market priceKES 150/kg
Expected yield in Taita Taveta220 kg/acre
Estimated revenueKES 33,000/acre
Adjusted for Taita Taveta's 44/100 suitability. Under ideal conditions Chia can reach 400 kg/acre (~KES 60,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureSandy Loam

Fertilizer prices

DAP
KES 3,500(6,500)
CAN
KES 2,875(4,500)
NPK 17:17:17
KES 3,275(5,600)
Urea
KES 3,500(5,500)
Lime
KES 1,500(1,800)

Green = subsidized · (Commercial) per 50kg bag